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C.J.PET ERS-EN. SUSPENSION DEVICE.

No. 345,172. Patented July 6, 1886.

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SUSPENSION DEVICE.

Patented Jul 6, 1886.

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PATENT Orricn.

CHARLES J. PETERSEN, OF PORT CHESTER, NEW YORK.

SUSPENSION DEVICE.

SPECIFICATION forming part of Letters Patent Ne. 345,172, dated July 6, 1886.

Application filed April 512, 1886. Serial No. 199,829.

To aZZ whom it may concern;

Be it known that I, CHARLES J. PETERSEN, a citizen of the United States, residing at Port Chester, in the county of Westchester and State of New York, have invented new and useful Improvements in Suspension Devices, of which the following is a specification.

This invention relates to devices for suspending lamps or other articles; and it consists in certain novel features of construction, which are fully pointed out in the following specification and claims, and illustrated in the accompanying drawings, in which Figure 1 is a side View of my invention, showing a lamp suspended from it. Fig. 2 is a side view of my suspension device on a larger scale. Fig. 3 is an end view. Fig. 4. is an inverted plan or bottom View.

Similarletters indicate corresponding parts.

In the drawings, the letter A designates the main frame, the upper part of which is provided with a loop, a, by which my device may be suspended from the ceiling or any other convenient place. To this main frame is connected a swinging frame, 13, by a pivot, b. The swinging frame carries a spindle, c, on

g which the drum 0 rotates, being revolved in one direction by the suspension-cords d and e, and in the other by a coiled spring, f, located in said drum and fastened to it at one end, while the other end is fastened to the spindle 0. One end of this spindle carries a wrench or crank, g, by which it maybe rotated for the purpose of adjusting the tension of the springf, which is done by turning said wrench or crank until the spring has the desired tension, when the free end thereof is passed under a shoulder or stop, h, on the main frame A, holding the wrench in position and pre venting the unwinding of the said spring. The swinging frame also carries two guiderollers, Zj, placed'on opposite sides of the pivot I). On the drum 0 are wound, both in one direction, the two suspension-cords (Z and e, the first of which I shall call the release suspensioncord and the latter the brake suspension-cord, for reasons which will behercinafter explained.

To the main frame is attached a stationary brake-shoe, K, against which the periphery of the drum impinges, preventing said drum from turning,when a weight is suspended from (No model.)

my suspension device. This action of the drum on the brake-shoe is effected by turning the swinging frame,which carries the drum in the direction of the arrow 1, Fig. 2, so that the drum may be pressed against the brakeshoe with such force as to produce sufficient friction to overcome the action of the spring f in one direction, and the article supported in the other. This I accomplish by mounting a guide-roller, Z, in the main frame, over which I pass the brake suspension-cord c after the same has passed under the roller t, by which constructiomwhich is on the well-known principle of the pulley, I bring a force to bear on that end of the lever carrying the guide-roller iwhich is equal to twice the weight of the article suspended from my device and sufficient to produce the required friction between the drum and the brake-shoe; but should this friction not suffice, it is evident that it may be increased by again passing the brake suspension-cord over both guide-rollers i and Z. By this method of controlling the actionof the drum, I can suspend and hold in place articles of different weights without readjusting the tension of the coiled spring f. The release suspension-cord d passes from the drum Ounder the guide-roller Z, and then over the guideroller j in that end of the swinging frame 13 opposite to the one carrying the guide-roller i; but it may also pass directly from the drum to the guide-roller j. By applying sufficient force to this suspension cord the swinging frame is turned in a direction opposite to that indicated by arrow 1, I ig. 2, thereby raising said drum and releasing it from the action of the brake-shoe, leaving it free to be turned in either direction. After leaving the guiderollers in the swinging frame the cord may pass directly to the article to be suspended. \Vhen the latter is an article which it is neces sary to suspend in an exactly perpendicular 1inesuch as a lamp, for instanceI secure the ends of both of the cords to a suspensionbar, D, to which I attach said lamp or other article by a pivot, m, or when perpendicularity is not indispensable I may form a rigid connection between the suspended article and the bar D. If found desirable, I may also attach a releasing-cord, E, to this bar, as shown in Fig. 1. If it is found necessary, I can make the guide Z in the main frame, over which both suspension-cords pass, in the shape of two sep arate rollers, one for each cord.

What I claim as new, and desire to secure by Letters Patent, is-

1. A suspension device combining in its structure the following elements, to wit: the main frame A, the swinging frame B, pivoted thereto, a brake-shoe, k, attached to the main frame, a guidc-roller,'l, mounted in the latter,

.two guides, H, on opposite sides of the swinging frame, a rotating springdrum carried by the latter, the release suspension-cord (Z passing around the drum over the guide j, and thence to the article to be suspended, and the brake suspension-cord 12 passing around the drum and the guides i and Z, and thence passing to the article to be suspended, substautially as and for the purpose described.

2. The combination,with the main frame A and the swinging frame B, pivoted to the main frame, of a brake-shoe, k, attached to the main frame, a guide-roller, Z, mounted in said main frame, two guides, 2' on opposite sides of the swinging frame, a rotating spring-drum carried by the swinging frame, the release suspension-cord (Z passing around the drum and over the guide j, and the brake suspension cord 6 passing around the drum and around both the guides i and Z, and a bar, D, connected with the suspension-cords,substanti ally as described.

3. The combination,with the main frame A and the swinging frame B, pivoted to the main frame, of a brake-shoe, 70, attached to the main frame, a guide-roller, Z, mounted in said main frame, two guides, j, on opposite sides of the swinging frame, a rotating spring-drum carried by the swinging frame, the release suspension-cord d passing around the drum and over the guidej, the brake suspensioncord c,

passing around said drum and around both guides 1' and Z, and the bar D, suspended from both suspensioncords, and having the article to be suspended connected therewith, substantially as described.

4. The combination,with the main frame A and the swinging frame B, pivoted to the main frame, of abrake-shoe, is, attached to the main frame, a guide-roller, Z, mounted in said main frame, two guides, z j, on opposite sides of the swinging frame, a rotating spring-drum carried byt-he swinging frame, the release suspension-cord d, passing around the drum and over the guide j, and the brake suspensioncord c,passing around thed rum and both guides 13 and Z, the bar D, suspended from both suspension-cords, and a pivotal connection between said bar and the article to be suspended, substantial] y as described.

5. The combination,with the main frame A and the swinging frame B, pivoted to the main frame, of a blfliCGShOO, 70, attached to the main frame, a guide-roller, Z, mounted in said main frame, two guides, ij, on opposite sides of the swinging frame, a rotating spring-druincarried by the swinging frame, the release suspension-cord (Z, passing around the drum over the guidej, the brakesuspension-cord e, passing around said drum and around both guides 'Z and Z, the bar D, suspended from both suspension-cords, and having the article to be suspended connected therewith, and the releasingcord (Z, substantially as described.

In testimony whereof I have hereunto set my hand and seal in the presence of two subscribing witnesses.

CHARLES J. PETERSEN. [n s] Witnesses:

W. HAUFF, A. FABER DU FAUR, Jr. 

